/* Facebook-inspired Color Theme */
:root {
  /* Primary colors - Facebook blue */
  --md-primary: #1877F2;  /* Facebook blue */
  --md-on-primary: #ffffff;  /* White text on primary */
  --md-primary-container: #E7F3FF;  /* Light blue container */
  --md-on-primary-container: #0A3977;  /* Dark blue text on container */
  
  /* Secondary colors - Facebook accent colors */
  --md-secondary: #42B72A;  /* Facebook green (for actions) */
  --md-on-secondary: #ffffff;  /* White text on secondary */
  --md-secondary-container: #E3F1DF;  /* Light green container */
  --md-on-secondary-container: #1F5C15;  /* Dark green text on container */
  
  /* Tertiary colors - Facebook accent */
  --md-tertiary: #4B4F56;  /* Facebook dark gray */
  --md-on-tertiary: #ffffff;  /* White text on tertiary */
  --md-tertiary-container: #E9EBEE;  /* Facebook light gray container */
  --md-on-tertiary-container: #23272F;  /* Dark gray text on container */
  
  /* Error colors */
  --md-error: #ba1a1a;  /* Error color */
  --md-on-error: #ffffff;  /* Text on error */
  --md-error-container: #ffdad6;  /* Container with error */
  --md-on-error-container: #410002;  /* Text on error container */
  
  /* Background colors - Facebook uses white backgrounds */
  --md-background: #F0F2F5;  /* Facebook light gray background */
  --md-on-background: #1C1E21;  /* Facebook dark text */
  --md-surface: #FFFFFF;  /* White surface color */
  --md-on-surface: #1C1E21;  /* Facebook dark text */
  
  /* Surface variant colors - Facebook uses subtle grays */
  --md-surface-variant: #E4E6EB;  /* Facebook lighter gray */
  --md-on-surface-variant: #65676B;  /* Facebook medium gray text */
  --md-outline: #CED0D4;  /* Facebook border color */
  --md-outline-variant: #BEC3C9;  /* Facebook lighter border */
  
  /* Elevation levels */
  --md-shadow-1: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
  --md-shadow-2: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
  --md-shadow-3: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
  --md-shadow-4: 0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.22);
  --md-shadow-5: 0 19px 38px rgba(0,0,0,0.30), 0 15px 12px rgba(0,0,0,0.22);
  
  /* Shape */
  --md-shape-small: 4px;
  --md-shape-medium: 8px;
  --md-shape-large: 16px;
  --md-shape-extra-large: 28px;
  
  /* Typography */
  --md-font-family: 'Roboto', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

/* Base Styles */
body { 
  font-family: var(--md-font-family); 
  background: var(--md-background); 
  margin: 0; 
  padding: 0; 
  color: var(--md-on-background); 
  line-height: 1.5; 
}

h2, h3, h4, h5, h6 { 
  margin-top: 0; 
  font-weight: 400; 
  color: var(--md-on-surface);
}

a { 
  color: var(--md-primary); 
  text-decoration: none; 
  transition: color 0.2s ease;
}

a:hover { 
  color: var(--md-primary-container); 
}

/* Layout */
.container { 
  max-width: 1200px; 
  margin: 0 auto; 
  padding: 24px; 
}

.spacer { 
  flex: 1; 
}

/* Header & Navigation */
/* Toolbar - Facebook style */
.md-toolbar {
  background-color: var(--md-primary);
  color: var(--md-on-primary);
  height: 56px;
  padding: 0 16px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1); 
  position: sticky; 
  top: 0; 
  z-index: 10; 
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.md-toolbar-tools { 
  display: flex; 
  align-items: center; 
  height: 100%; 
  width: 100%; 
  max-width: 1200px; 
  margin: 0 auto; 
}

.app-logo {
  color: white;
  font-size: 24px;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.5px;
}

.main-nav { 
  display: flex; 
  gap: 0; 
  margin-right: 16px;
}

.main-nav a { 
  color: var(--md-on-primary); 
  text-decoration: none; 
  padding: 8px 16px; 
  border-radius: 0; 
  transition: all 0.2s ease;
  position: relative;
  height: 56px;
  display: flex;
  align-items: center;
}

.main-nav a:hover { 
  background: rgba(255, 255, 255, 0.1); 
}

.main-nav a.active { 
  color: var(--md-on-primary); 
  font-weight: 500; 
  background: transparent;
}

.main-nav a.active:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background-color: white;
  border-radius: 4px 4px 0 0;
}

.new-review-btn {
  background-color: var(--md-secondary);
  color: white;
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 20px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
  height: 36px;
  margin-left: 16px;
}

.new-review-btn:hover {
  background-color: #36a520;
  text-decoration: none;
}

.new-review-btn.active {
  background-color: #36a520;
}

/* Page Header */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--md-outline-variant);
}

.page-header h3 {
  font-size: 28px;
  margin: 0;
  color: var(--md-on-surface);
}

/* Buttons */
.btn-primary {
  background: var(--md-primary);
  color: var(--md-on-primary);
  border: none;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: none;
  text-transform: none;
  letter-spacing: normal;
}

.btn-primary:hover {
  background: #166FE5; /* Slightly darker Facebook blue */
  text-decoration: none;
}

.btn-secondary {
  background: var(--md-surface-variant);
  color: var(--md-on-surface-variant);
  border: none;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-transform: none;
  letter-spacing: normal;
}

.btn-secondary:hover {
  background: #c6d6ee; /* Slightly darker secondary container */
  text-decoration: none;
}

.btn-edit, .btn-view {
  background: var(--md-tertiary-container);
  color: var(--md-on-tertiary-container);
  border: none;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-right: 8px;
}

.btn-edit:hover, .btn-view:hover {
  background: #e8c8ff; /* Slightly darker tertiary container */
  text-decoration: none;
}

.btn-delete {
  background: var(--md-error-container);
  color: var(--md-on-error-container);
  border: none;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-delete:hover {
  background: #ffb4a9; /* Slightly darker error container */
}

/* Data Tables */
.data-table {
  background: var(--md-surface);
  border-radius: 20px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  margin-bottom: 32px;
  border: 1px solid var(--md-outline);
}

.data-table table {
  width: 100%;
  border-collapse: collapse;
  border-spacing: 0;
}

.data-table th {
  background: var(--md-surface-variant);
  color: var(--md-on-surface-variant);
  font-weight: 500;
  text-align: left;
  padding: 16px;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.data-table td {
  padding: 16px;
  border-bottom: 1px solid var(--md-outline-variant);
  color: var(--md-on-surface);
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr:hover {
  background: rgba(0, 0, 0, 0.02);
}

.data-table .actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.data-table .delete-form {
  display: inline;
}

/* Sortable Table Headers */
.sortable {
  cursor: pointer;
  position: relative;
  padding-right: 24px;
  user-select: none;
}

.sortable:after {
  content: '⇅';
  position: absolute;
  right: 8px;
  color: var(--md-outline);
  font-size: 14px;
}

.sortable.asc:after {
  content: '↑';
  color: var(--md-primary);
}

.sortable.desc:after {
  content: '↓';
  color: var(--md-primary);
}

/* Flash Messages - Facebook style */
.flash-messages {
  margin-bottom: 24px;
}

.flash-message {
  background: #E7F3FF;
  color: #0A3977;
  padding: 12px 16px;
  border-radius: 20px;
  margin-bottom: 16px;
  border: 1px solid #B8DAFF;
  display: flex;
  align-items: center;
  font-size: 15px;
}

/* Empty States */
.empty-state {
  text-align: center;
  color: var(--md-on-surface-variant);
  padding: 48px 24px;
  background: var(--md-surface);
  border-radius: var(--md-shape-medium);
  box-shadow: var(--md-shadow-1);
}

.empty-state p {
  margin-bottom: 24px;
  font-size: 16px;
}

/* Forms - Facebook style */
.form-card {
  background: var(--md-surface);
  border-radius: 20px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  padding: 24px;
  margin-bottom: 32px;
  border: 1px solid var(--md-outline);
  box-sizing: border-box;
  max-width: 100%;
  overflow: hidden;
}

.entity-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 100%;
}

.form-row {
  display: flex;
  gap: 20px;
  width: 100%;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 20px;
}

.form-grid-full {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 20px;
  width: 100%;
  max-width: 100%;
}

.form-column {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-column-full {
  display: flex;
  flex-direction: column;
  gap: 20px;
  grid-column: 1 / -1;
  width: 100%;
}

.form-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0 20px;
  margin-bottom: 20px;
}

.form-table td {
  padding: 0;
  vertical-align: top;
}

.form-table td:first-child {
  padding-right: 12px;
}

.form-table td:last-child {
  padding-left: 12px;
}

.form-table td[colspan="2"] {
  padding-left: 0;
  padding-right: 0;
}

.two-column-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 768px) {
  .form-row {
    flex-direction: column;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  width: 100%;
}

.form-row .form-group {
  flex: 1;
  min-width: 0;
}

.select-container {
  width: 100%;
}

.short-input {
  max-width: 250px;
}

.right-aligned {
  margin-left: auto;
  margin-right: 0;
}

@media (max-width: 768px) {
  .form-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .form-column {
    gap: 16px;
  }
  
  .short-input {
    max-width: 100%;
  }
  
  .two-column-grid {
    grid-template-columns: 1fr;
  }
  
  .right-aligned {
    margin-left: 0;
  }
}

.entity-form label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--md-on-surface-variant);
  font-size: 15px;
}

.entity-form input[type="text"],
.entity-form input[type="password"],
.entity-form input[type="number"],
.entity-form input[type="email"],
.entity-form select,
.entity-form textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--md-outline);
  border-radius: 20px;
  background: var(--md-surface);
  color: var(--md-on-surface);
  font-size: 15px;
  transition: border-color 0.2s ease;
  box-sizing: border-box;
  max-width: 100%;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--md-primary);
  outline: none;
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 16px;
  margin-top: 16px;
}

/* Dashboard */
.dashboard {
  margin-bottom: 40px;
}

.dashboard h3 {
  margin-bottom: 24px;
  font-size: 28px;
  color: var(--md-on-surface);
}

.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 24px;
}

@media (max-width: 768px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

/* Cards */
.dashboard-card {
  background: var(--md-surface);
  border-radius: var(--md-shape-medium);
  box-shadow: var(--md-shadow-1);
  padding: 24px;
  margin-bottom: 24px;
  transition: box-shadow 0.2s ease;
}

.dashboard-card:hover {
  box-shadow: var(--md-shadow-2);
}

.dashboard-card h4 {
  margin-bottom: 16px;
  font-size: 20px;
  color: var(--md-primary);
  font-weight: 500;
}

.view-all {
  display: block;
  text-align: center;
  margin-top: 16px;
  padding: 12px;
  border-top: 1px solid var(--md-outline-variant);
  color: var(--md-primary);
  font-weight: 500;
  transition: background-color 0.2s ease;
}

.view-all:hover {
  background-color: var(--md-primary-container);
  text-decoration: none;
}

/* Filter Section */
.filter-section {
  background: var(--md-surface);
  border-radius: 20px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  padding: 24px;
  margin-bottom: 24px;
  border: 1px solid var(--md-outline);
}

.filter-section h4 {
  margin-top: 0;
  margin-bottom: 20px;
  color: var(--md-on-surface);
  font-weight: 600;
  font-size: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.filter-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.select-container {
  flex: 1;
  min-width: 200px;
}

.select-wrapper {
  position: relative;
  width: 100%;
}

.select-wrapper select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  width: 100%;
  padding: 12px 16px;
  padding-right: 40px;
  background: var(--md-surface);
  border: 1px solid var(--md-outline);
  border-radius: 20px;
  font-size: 15px;
  color: var(--md-on-surface);
  cursor: pointer;
}

.select-wrapper select:focus {
  border-color: var(--md-primary);
  outline: none;
  box-shadow: 0 0 0 2px rgba(24, 119, 242, 0.2);
}

.select-arrow {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--md-on-surface-variant);
  pointer-events: none;
}

.full-width-input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--md-outline);
  border-radius: 20px;
  background: var(--md-surface);
  color: var(--md-on-surface);
  font-size: 15px;
  transition: border-color 0.2s ease;
  box-sizing: border-box;
  margin-bottom: 16px;
}

.full-width-input:focus {
  border-color: var(--md-primary);
  outline: none;
  box-shadow: 0 0 0 2px rgba(24, 119, 242, 0.2);
}

.search-btn {
  background: var(--md-primary);
  color: var(--md-on-primary);
  border: none;
  padding: 12px 24px;
  border-radius: 20px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  align-self: flex-start;
  box-shadow: none;
  text-transform: none;
  letter-spacing: normal;
  display: flex;
  align-items: center;
  gap: 8px;
}

.search-btn:hover {
  background: #166FE5; /* Slightly darker Facebook blue */
  text-decoration: none;
}

/* Reviews & Vendors Lists */
.reviews-list,
.vendors-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.review-item,
.vendor-item {
  border-bottom: 1px solid var(--md-outline-variant);
  padding-bottom: 16px;
  margin-bottom: 16px;
}

.review-item:last-child,
.vendor-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.review-header,
.vendor-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 8px;
}

.review-header h5,
.vendor-header h5 {
  margin: 0;
  font-size: 18px;
  color: var(--md-on-surface);
  font-weight: 500;
}

.review-meta,
.vendor-meta {
  font-size: 14px;
  color: var(--md-on-surface-variant);
  margin-bottom: 8px;
}

.review-text {
  margin: 8px 0;
  color: var(--md-on-surface);
}

.review-footer {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  color: var(--md-on-surface-variant);
}

/* Ratings */
.rating {
  display: flex;
  align-items: center;
}

.rating-value {
  font-weight: bold;
  margin-right: 8px;
  color: var(--md-on-surface);
}

.stars {
  display: flex;
}

.star {
  color: var(--md-outline);
}

.star.filled {
  color: #ffb400; /* Material amber */
}

.star.half {
  color: #ffb400; /* Material amber */
}

/* Footer */
.app-footer {
  background: var(--md-surface-variant);
  padding: 24px 0;
  margin-top: 40px;
  color: var(--md-on-surface-variant);
  text-align: center;
}

/* Login Page Specific */
.login-container {
  max-width: 400px;
  margin: 50px auto;
  padding: 32px;
  background: var(--md-surface);
  border-radius: var(--md-shape-medium);
  box-shadow: var(--md-shadow-2);
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.login-form label {
  color: var(--md-on-surface-variant);
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 500;
}

.login-form input {
  padding: 12px 16px;
  border: 1px solid var(--md-outline-variant);
  border-radius: var(--md-shape-small);
  background: var(--md-surface);
  color: var(--md-on-surface);
  font-size: 16px;
  transition: border-color 0.2s ease;
}

.login-form input:focus {
  border-color: var(--md-primary);
  outline: none;
}

.login-form button {
  margin-top: 8px;
  background: var(--md-primary);
  color: var(--md-on-primary);
  border: none;
  padding: 12px;
  border-radius: var(--md-shape-small);
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  box-shadow: var(--md-shadow-1);
  transition: all 0.2s ease;
}

.login-form button:hover {
  background: #0078b4; /* Slightly darker primary */
  box-shadow: var(--md-shadow-2);
}

.flask-error {
  color: var(--md-on-error-container);
  background-color: var(--md-error-container);
  margin: 16px 0;
  padding: 12px 16px;
  border-radius: var(--md-shape-small);
  font-size: 14px;
}